| 摘要 |
PROBLEM TO BE SOLVED: To allow for independent control of the intensity of light of each wavelength, without increasing the number of components of the device, in a laser device using a laser medium having two oscillation wavelengths of different luminous efficiency.SOLUTION: A laser device includes a laser medium (laser rod 51) having an oscillation wavelength in a first wavelength and a second wavelength of higher luminous efficiency than that of the first wavelength, an exciting unit (a flash lamp 52), a first resonator C1, a second resonator C2, Q value changing units (56 and 57) for causing Q switch oscillation of the light of first or second wavelength, and a control unit (control circuit 62) for controlling the exciting unit and Q value changing units. When the oscillation wavelength is the first wavelength, the control unit causes Q switch oscillation of the light of first wavelength, upon elapsing a first delay time after excitation of the laser medium is started, and when the oscillation wavelength is the second wavelength, the control unit causes Q switch oscillation of the light of second wavelength, upon elapsing a second delay time after excitation of the laser medium is started. |
